English verb conjugation
MUST PLANE

Regular verb: plane - planed - planed

Affirmation

Simple form	V-ing form
I must plane you must plane he must plane we must plane you must plane they must plane	I must be planing you must be planing he must be planing we must be planing you must be planing they must be planing
Perfect	V-ing perfect
I must have planed you must have planed he must have planed we must have planed you must have planed they must have planed	I must have been planing you must have been planing he must have been planing we must have been planing you must have been planing they must have been planing

Negation

Simple form	V-ing form
I must not plane you must not plane he must not plane we must not plane you must not plane they must not plane	I must not be planing you must not be planing he must not be planing we must not be planing you must not be planing they must not be planing
Perfect	V-ing perfect
I must not have planed you must not have planed he must not have planed we must not have planed you must not have planed they must not have planed	I must not have been planing you must not have been planing he must not have been planing we must not have been planing you must not have been planing they must not have been planing

Interrogative form

Simple form	V-ing form
must I plane? must you plane? must he plane? must we plane? must you plane? must they plane?	must I be planing? must you be planing? must he be planing? must we be planing? must you be planing? must they be planing?
Perfect	V-ing perfect
must I have planed? must you have planed? must he have planed? must we have planed? must you have planed? must they have planed?	must I have been planing? must you have been planing? must he have been planing? must we have been planing? must you have been planing? must they have been planing?

Interro-negative form

Simple form	V-ing form
must I not plane? must you not plane? must he not plane? must we not plane? must you not plane? must they not plane?	must I not be planing? must you not be planing? must he not be planing? must we not be planing? must you not be planing? must they not be planing?
Perfect	V-ing perfect
must I not have planed? must you not have planed? must he not have planed? must we not have planed? must you not have planed? must they not have planed?	must I not have been planing? must you not have been planing? must he not have been planing? must we not have been planing? must you not have been planing? must they not have been planing?